Blog Promotion Idea

hi all based on Free Blog Hosts i got an idea about some promotion activities just wanted to know is this the right way to promote.

Lets consider a Hypothetical Situation.

I start creating one account each on all the bloghost's. andi also have one blog hosted at my server.

Now what i plan is that all the bloghost have XMLRPC or simmilar protocol to allow remote publishing. in that case we can build a wordpress plugin which can push the excerpts of blogpost published on main blog with a ling to main blog for detailed reading.

Sure, that will work (if you have that protocol available), but you still need traffic moving through some of those sites and blogs. It is not likely this will do all that much from an SEO standpoint, but may help a little.